EL
ErrorLib
Brands
||
  1. Home
  2. Allen-Bradley
  3. MicroLogix 1400 Programmable Controllers
  4. ERR_SOCKET_DISCONNECT
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

ERR_SOCKET_DISCONNECT

Socket error during Disconnect operation

Allen-Bradley · MicroLogix 1400 Programmable Controllers

What does ERR_SOCKET_DISCONNECT mean?

An error occurred during the socket disconnect operation. This indicates a failure to properly terminate an established Modbus TCP connection, potentially leaving orphaned connections or preventing new ones.

Common Causes

  • Network issues preventing graceful shutdown between the controller and the remote device.
  • Remote peer unresponsive to disconnect requests.
  • Internal network stack issues.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify network connectivity to the remote Modbus TCP device.

  2. 2

    Check the operational status of the remote Modbus TCP device.

  3. 3

    Restart the controller to clear persistent or orphaned connections.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

-1Output Error-2Overlap Error-3Undefined Accel/Decel
Source: Allen-Bradley MicroLogix 1400 Programmable Controllers
Open Manual (Page 330)Search more codes in this manual